// Copyright Oliver Kowalke 2009. // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) #include <cstdlib> #include <iostream> #include <boost/context/all.hpp> #include <boost/exception_ptr.hpp> #include "simple_stack_allocator.hpp" namespace ctx = boost::context; typedef ctx::simple_stack_allocator< 8 * 1024 * 1024, // 8MB 64 * 1024, // 64kB 8 * 1024 // 8kB > stack_allocator; ctx::fcontext_t fcm = 0; ctx::fcontext_t fc = 0; boost::exception_ptr except; void f( intptr_t arg) { std::cout << "calling caller..." << std::endl; ctx::jump_fcontext( & fc, fcm, arg); try { try { throw std::runtime_error("mycoro exception"); } catch(const std::exception& e) { std::cout << "calling caller in the catch block..." << std::endl; ctx::jump_fcontext( & fc, fcm, arg); std::cout << "rethrowing mycoro exception..." << std::endl; throw; } } catch (const std::exception& e) { std::cout << "mycoro caught: " << e.what() << std::endl; } std::cout << "exiting mycoro..." << std::endl; } int main( int argc, char * argv[]) { stack_allocator alloc; void * base = alloc.allocate( stack_allocator::default_stacksize()); fc = ctx::make_fcontext( base, stack_allocator::default_stacksize(), f); ctx::jump_fcontext( & fcm, fc, ( intptr_t) 0); try { try { throw std::runtime_error("main exception"); } catch( std::exception const& e) { std::cout << "calling callee in the catch block..." << std::endl; ctx::jump_fcontext( & fcm, fc, ( intptr_t) 0); std::cout << "rethrowing main exception..." << std::endl; throw; } } catch ( std::exception const& e) { std::cout << "main caught: " << e.what() << std::endl; } std::cout << "calling callee one last time..." << std::endl; ctx::jump_fcontext( & fcm, fc, ( intptr_t) 0); std::cout << "exiting main..." << std::endl; return EXIT_SUCCESS; }